It sounds like you may have encountered a misleading or potentially unsafe filename — Adobe Acrobat Dc Ocr Fix.exe — often bundled with terms like --39-LINK--39- in some forums or download sites. Legitimate Adobe Acrobat software does not use an isolated .exe with that naming convention for OCR fixes.
If the OCR quality is poor or the "Recognize Text" tool hangs: Go to Tools > Edit PDF > Scanned Documents. Adobe Acrobat Dc Ocr Fix.exe --39-LINK--39-